ASTM F2072-14 PDF

Scope: 4.1 The presence of water inside a membrane switch can affect its mechanical operation or electrical functionality, or both.

4.2 This practice establishes a procedure to verify the ability of a membrane switch to resist the entry of liquid into itself or a finished product, or both. It is useful in identifying design deficiencies.

4.3 Hosedown testing may be destructive, therefore any samples tested should be considered unfit for future use.

1.1 This test method establishes procedures for the hosedown of a membrane switch to verify adequate protection from ingress of water from a high-volume water spray.

1.2 This test method can also be used to verify the ability of a membrane switch or graphics layer to act as a liquid seal for a finished product.

1.3 Additional test methods or practices can be incorporated to investigate specific results or capabilities.

1.4 This test method is a modification of NEMA Publication Number 250-2008 Section 6.7 which is a test for hosedown of a finished product housing.

ASTM F2072-14 Referenced Document

ASTM F1595 Standard Practice for Viewing Conditions for Visual Inspection of Membrane Switches
ASTM F1680 Standard Test Method for Determining Circuit Resistance of a Membrane Switch
ASTM F1689 Standard Test Method for Determining the Insulation Resistance of a Membrane Switch